The Claim
A 1-liter dose of a glycerol-electrolyte solution containing 0.75% glycerol and 40 mmol/L sodium improves net fluid balance by 0.15% over 8 hours in healthy adults, but the effect size is small and may not translate to clinically meaningful hydration benefits.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Drinking 1 liter of a specific glycerol-electrolyte solution with 0.75% glycerol and 40 mmol/L sodium increases net fluid balance by 0.15% over 8 hours in healthy adults, but the change is small and does not result in meaningful hydration improvement.
See the scientific wording
A 1-liter dose of a glycerol-electrolyte solution with 0.75% glycerol and 40 mmol/L sodium improves net fluid balance by 0.15% over 8 hours in healthy adults, but the effect size is small and may not translate to clinically meaningful hydration benefits.
When glycerol and sodium are absorbed from the gut, they make the blood slightly saltier, which tells the kidneys to hold onto more water instead of peeing it out. This keeps more fluid in the body for several hours.
What the research says
1 studyThis study found that drinking one liter of this special drink helped people keep 0.15% more fluid in their body than if they drank plain flavored water — but the difference was tiny and only lasted a few hours.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.